Question

    Icebike is a term used for winter bicycling? particularly in snowy or icy conditions on roads or tracks. It can also refer specifically to ice bike racing. 1. While special equipment is available for icebiking, less extreme versions of the sport are often undertaken on normal bicycles.

Biking during the winter can generally be referred to as icebike. Ideal weather conditions typically range from cool and rainy, to cold and dry, to cold and snowy or icy. 2. Cyclists may choose to bike during the winter for a variety of reasons? including commuting（通勤），exercise or simply for fun. The types and amounts of special equipment required for winter cycling vary by climate conditions and whether the biking is done primarily on roads or on tracks.

In milder winter conditions? a regular road or mountain bike is often enough for icebiking. For snowy or icy roads and tracks, special tires may be necessary. Icebikers may use tires with screws（螺丝）inserted from the inside. 3.

Other equipment may be necessary for winter cycling whether or not there is snow and ice. Fenders（挡泥板）can prevent water or snow from being thrown up onto a cyclist. 4.They are of particular importance during the winter since it is dark during a larger part of the day.

5. Gloves, shoes and socks are of particular importance for icebikers. Cyclists may use regular gloves. Regular bike shoes? winter bike shoes or winter boots may be used for cycling, depending on climate and the biker's preference. In general? clothing guidelines for icebiking are similar to those for other winter sports.

A.Biking at any time is possible.

B.Bike lights are required for cycling after dark.

C.A cyclist must have a good knowledge of icebike.

D.Icebike can also refer to either road biking or track biking.

E.Appropriate clothing for outdoor winter exercise is important.

F.Other options for wintery tires include tire chains and tire wires.

G.In this condition race courses are marked out on solid sheets of ice.

Answer

1.G

2.D

3.F

4.B

5.E

【解析】

本文是一篇说明文。文章主要介绍了冰上自行车的知识，以及选手应该配备的一些装备等。

1.根据前一句“It can also refer specifically to ice bike racing.”可知，它也可以具体指冰上自行车比赛。G选项“在这种情况下，比赛场地被标在坚实的冰层上”与上文紧密衔接，符合语境。故选G。

2.根据第二段第一句“Biking during the winter can generally be referred to as icebike.”及空格后一句“Cyclists may choose to bike during the winter for a variety of seasons, including commuting（通勤）, exercise or simply for fun.”可知，骑自行车的人可以选择在冬季骑自行车，有多种季节，包括上下班、锻炼或只是为了好玩。D选项“冰上自行车也可以指公路自行车或越野自行车”承上启下，符合语境。故选D。

3.根据前一句“Icebikers may use tires with screws (螺丝) inserted from the inside.”可知，冰上自行车可使用从内侧插入螺钉的轮胎。F选项“冬季轮胎的其他选择包括轮胎链和轮胎钢丝”承接上文，符合语境。故选F。

4.根据后一句“They are of particular importance during the winter since it is dark during a larger part of the day.”可知，它们在冬天特别重要，因为一天内大部分时间是黑暗的。B选项“天黑后自行车需要灯光”引起下文，符合语境。故选B。

5.根据后一句“Gloves, shoes and socks are of particular importance for icebikers.”可知，手套、鞋子和袜子对冰船来说特别重要。E选项“适合户外冬季运动的衣服很重要”符合语境。故选E。